Fixer API vs Microlink.io
Same instrument, two spec sheets — measured, not claimed.
Fixer API vs Microlink.io: common questions
Which is more reliable, Fixer API or Microlink.io?
On our scheduled checks, Microlink.io leads on measured uptime — Fixer API at —% versus Microlink.io at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Fixer API and Microlink.io need an API key?
Microlink.io needs no key, while Fixer API requires a free API key. If you want to start calling without signup, reach for Microlink.io first.
Can I call Fixer API and Microlink.io from the browser?
Only Microlink.io is browser-friendly — it returns CORS headers over HTTPS. Fixer API needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Fixer API and Microlink.io free for commercial use?
Fixer API has unclear commercial terms, and Microlink.io has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.